公开(公告)号：US10320344B2

公开(公告)日：2019-06-11

申请号：US15720335

申请日：2017-09-29

Applicant: Skyworks Solutions, Inc.

Inventor： Oleksandr Gorbachov ,  Qiang Li ,  Floyd Ashbaugh ,  Aydin Seyedi ,  Lothar Musiol ,  Lisette L. Zhang

IPC: H03F3/04 ,  H03F3/193 ,  H03F1/30 ,  H03F1/02 ,  H03F1/32

Abstract: An RF power amplifier biasing circuit has a start ramp signal input, a main current source input, an auxiliary current source input, and a circuit output. A ramp-up capacitor is connected to the auxiliary current source input. A ramp-up switch transistor is connected to the start ramp signal input and is selectively thereby to connect the auxiliary current source input to the ramp-up capacitor. A buffer stage has an input connected to the ramp-up capacitor and an output connected to the main current source input at a sum node. A mirror transistor has a gate terminal corresponding to the circuit output and a source terminal connected to the sum node and to the gate terminal.

公开(公告)号：US09853620B2

公开(公告)日：2017-12-26

申请号：US14268199

申请日：2014-05-02

Applicant: SKYWORKS SOLUTIONS, INC.

Inventor： Oleksandr Gorbachov ,  Lisette L. Zhang ,  Huan Zhao ,  Lothar Musiol

IPC: H03H7/09 ,  H03H7/01

CPC classification number: H03H7/09 ,  H03H7/0115 ,  H03H7/1708 ,  H03H7/1758 ,  H03H7/1791

Abstract: A radio frequency (RF) filter circuit for rejecting one or more spurious components of an input signal has a first resonator circuit including a first capacitor and a first coupled inductor pair of a first inductor and a second inductor, and a second resonator circuit with a second capacitor and a second coupled inductor pair of a third inductor and a fourth inductor. First and second resonator coupling capacitors are connected to the first resonator circuit and the second resonator circuit. A first port and a second port are connected to the first resonator circuit and the second resonator, with the filtered signal of the input signal passed through both the first resonator circuit and the second resonator circuit being output.

公开(公告)号：US09806679B2

公开(公告)日：2017-10-31

申请号：US14849936

申请日：2015-09-10

Applicant: SKYWORKS SOLUTIONS, INC.

Inventor： Oleksandr Gorbachov ,  Qiang Li ,  Floyd Ashbaugh ,  Aydin Seyedi ,  Lothar Musiol ,  Lisette L. Zhang

IPC: H03F3/04 ,  H03F3/193 ,  H03F1/30 ,  H03F1/02 ,  H03F1/32

CPC classification number: H03F3/193 ,  H03F1/0261 ,  H03F1/301 ,  H03F1/3205 ,  H03F2200/18 ,  H03F2200/451

Abstract: An RF power amplifier biasing circuit has a start ramp signal input, a main current source input, an auxiliary current source input, and a circuit output. A ramp-up capacitor is connected to the auxiliary current source input. A ramp-up switch transistor is connected to the start ramp signal input and is selectively thereby to connect the auxiliary current source input to the ramp-up capacitor. A buffer stage has an input connected to the ramp-up capacitor and an output connected to the main current source input at a sum node. A mirror transistor has a gate terminal corresponding to the circuit output and a source terminal connected to the sum node and to the gate terminal.